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'77 R600 Max safe RPM


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I just snagged a 1977 R600 with an ETAZB673A, 315+ engine. Thermodyne??

I can't seem to find any info on max safe RPM and power band etc for the 315+ engines. Any ideas?

Also noticed a little oil coming off the bell housing. How much is normal, and when to worry about it, ie fail an inspection??

Thanks

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Thanks for the brochures. It's nice to see some of the original literature.

So with a peak HP of 1900 for the ETAZ 315HP, what would be the max safe RPM?

For the Maxidyne as an example?

Are the valve springs the RPM limiter??

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Thanks for the brochures. It's nice to see some of the original literature.

So with a peak HP of 1900 for the ETAZ 315HP, what would be the max safe RPM?

For the Maxidyne as an example?

Are the valve springs the RPM limiter??

Could be, but likely the governor setting.

Ken

HOF City, PRR Country, and Charter member of the "Mack Pack"

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Mack 12Spd 1070. I believe the rear diffs are geared fairly high. 3.??:1 I don't recall exactly, have to look it up.

Just got a hold of by uncles Mack service books, so I'll cruise through them. A little light reading.

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2100 loaded 2300 no load...per Mack's specs

They will turn faster but valve float will become an issue. I don't know exactly where that happens. But suspect around 2700-3000

Our sled puller turns around 2500 and was told to not spin it faster.

Thanks for the info. I've been afraid of taking it past 2000, and it makes hard to shift into the next gear going uphill...

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